Android JSON parsing data

A: Introduction to JSON

JSON refers to JavaScript Object notation, a lightweight text data interchange format, similar to XML, but smaller, faster, and easier to parse than XML

Two: The comparison between JSON and XML (copy online)

Advantages:

      is simpler than XML format;  
       JSON is a better format for data interchange; XML is a better format for exchanging documents;  
      JSON is easier to machine read, uses a simple client library or self support (JavaScript),  
       JSON can be supported by browser client,  
      can support a variety of common data structures, record, list, tree;  
      21 languages support parsing and generating JSON format  
cons:

There is no CDATA-like feature in XML that is not suitable for passing binary data such as sounds and pictures;
JSON does not have the ability to display, compared with XML;
JSON is not extensible, as compared to XML.

Three: JSON is used to describe data structures in two ways

1, a collection of "name/value" pairs, also known as JSON Object, separated by ":" Before the name and value

{Name:value}

For example:

{"width": "123", "Height": "456"}

2, an ordered list of values, also known as a JSON Array

For example:

{"Employee": [{"width": "123", "Height": "345"}, {"width": "234", "height": "455"}, {"width": "566", "height": "269"}]}

Android JSON parsing data